Incandescent-lamp cluster.



PATENTED NOV. 6, 1906.

APPLIOATION FILED OUT. 15, 1904.

WiTNESSES:

ATTORNYEX' Whole are locked .in

cable to T. H. or any of the other well-known types of attachment-plugs and screw-shells.

32 denotes electrical connections, and 33 binding-screws, by which current is carried to the current-carrying cones. For convenience in description the upper end lower i nsulating-cones and current-carrying cones may be collectively termed the body, the body as a whole being indicated by 34. The body is permanently connected to the stern by means of the centerscrew and hickey. in the present instance it is shown as retained in place on the center-screw by means of a nut 36, an insulating-washer 35 being inter-- posed between said nut and the lower inside iting-cone. I

It will be notedin Figs. 1 and 3 that the hickey, centering-disk, and the body as place on the centeringscrew by being clamped between nuts 16 and 36.

37 denotes a non-conductinp casing by which the body is inclosed. This casing is shown as made in the form of an inverted cone, the base of the cone resting upon the under side ol. theshade and the flange 38 of the shade lying between the base 01 the cone and the shade-holder, as clearly shown in Fig. 1. The lower end of the center-screw passes through the bottom oi the casing and is engaged below the casing by LL loel ing-uut 5U. The casing is shown provided with an internal shoulder it), which engages the under side of the (ltlltCl'lllgflllSli, with grooves 41., which receive the contacts extending from the body, and with slots 42, through which the contact-platesof the attachment plugs are passed in connecting lamps to the cluster. An important feature of construct ion is that the extreme diameter of the body, including the contacts which extend therofrom, is less than the diameter of the ordinary opening (indicated by 43) in a shade, so that a shade may be easily passed over the body in attaching or removing it.

The mode of assembling, as in removing or attaching a shade, will be readily understood. from Fig. 1. Suppose the parts to beassenibled in. Fig. .l and that it is desired to I place a broken shade. The operator first 1 moves the lamps from the cf then turns oil locking-nut which leaves the casing and shade unattached and free to be removed downward over the OQD'IZQP-SUIUW and body. The new shade is then passed over the body, the upper end of the llange ot the shade resting in. the.shede holder. Then the casing is passed over the body, the grooves in the casing receiving the contacts, the shoul der oi the casing lyin against the center-hogplete, end the shade being held between the shadeholder and the base of the casing, (indiceted by 44,) as eleerly'shown. The parts are then secured in place by turning the loclo sier by do h- .ing the sttachnicnt-plugs train the body and ing-nut onto the lower end of the'centen screw, the face of the nut bearing against the bottom of the casing and actin {to retain ing elaniped between the base of the casing end the shade-holder.

the cs g is retrieved.

.3. ln an incandescent-lamp cluster, the combination th a shedc-holder and a body carrying contacts, of an insulating-easing adapted to lIWlOSQ the body end in connection with the shade-l'iold er to retain a. shade which. is removable over the body, said cesing being provided with slots through. which contact-pistes may be pessod to engage the 'coi'itacts on the body.

in an incendescent-lenip cluster, the combination with a :illfHlC-illhldfl and e body carrying contacts, of an iusubirtingdzasing adapted to imalose the body and having slots tl'uough which. the eontact-plates of attachntph {s an. i he passed into engagement h the casing and shadecontiicts, said holder being adapted to retain it sheds which is ri'inio'vebie over the body.

in. an ino:uidcseent-lamp cluster, the coinhinsiion withv a shnde-l'iolder and. a body comprising upper and lower insuleting-c nes and upper and lower curi'ent-earrying cones provide-1i th contacts, of an insulating-rasodapti t to inclose the body and in connection with the sluulc-hohier to retain a shade which is reu'ioyztble over the body.

in. en iixi"andescent-lamp cluster, the con. ion with a. shade-holder and a body compris upper and lowor'iiisuleting-ci)nee and upper and lower currei'it-carrying cones ,rm'ided with. coma, of a center-screw, an sobitingwasing ailz ptod to inclose the body d n eonnevtion with the shedediolder to .aiu it shade winch. is removable over the body and means for locking the casing to the centeesci'ew A body for incandescentdamp clusters cones and upper and lower current-carrying cones, substantially as shown and described. 7. A body for ineandescentdamp clusters consisting of upper and lower. insulating cones and upper and lower emrentcarrying cones having registering points engaging the insulating-cone, whereby said parts, are retinned in position relative to each other.

8. in an i ncandescent-lamp cluster, the combination with a center-screw end a body I eoi'isistiogg of upper and lower insi'daturlg' botheasing and shade in place, the letter be-' aying thus described. my invention, I

through which the body may be ].)XtSB(l whei.

combination with a stern; a hickey and a body, of a shade removable overthe body and an insulating-casing adapted to inclose the body and to clamp a shade between its base and the shade-holder.

10. In an incandescentdnmp cluster, the combination with a stem, a shade-holder, 2t hickey and a center-screv, of a centeringdisk' and body carried by the center-screw, and an insulating-casing having a shoulder to engage the centering-disk.

11. In an incandescent-lamp cluster, the combination with a center-screw, and a centering-disk and a body having contacts carried thereby, of an insulating-casing having a shoulder to engage .the centering-disk,

grooves to receive the contacts and slots through which the. contact-plates of attachment plugs may be passed into engagement with the contacts.

12.' In an incandescent-lamp cluster. the combination with a shade-holder, hicl-zey and a center-screw of a body pern'mnently secured to the center-screw and carrying contacts and a removable casing which coacts with the shade-holder in retaining a shade that is removable over the body.

13. In an incznidesct-ntlanip cluster, the combination With it shade-holder, eccnterscrew and a body permanently secured thereto, of electrical connections extending to the body and tin insi1latingcasing romovably secured to the screw and acting in connection with the shade-holder to retain a shade which is removable over the body.

14. In an incandescent-lamp cluster, the

conibii'ietion with a shade-holder a body carrying contacts, of an insulating-casing PI'Ovlil-ibil with slots and adapted to inclose the bod y and retain a she-do which is removable over the body and an attachment-plug having screw-shell to receive it lamp-base and contact-plates adapted to pass through the slots and engage the contacts on the body.

15. A cluster-fixture, comp .ng s central supperting-spindle adapted ttt its upper end for attachment to it pipe, insulation 0 rried by the spindle, and a metallic ring on the ore terior of Sit-ltfl. insulation, providing one set of contacts for a number of lamps in o n1binntion with another set of contacts for said lamps slsi' on the exterior of seid insulation.

16. A. cluster-fixture, comprising a central supporting spindle, insulating bushings mounted on the spindle and carrying two sets of contacts for at number of lamps and an inclosing; casing.

17. A clii'ste ixture comprising central supporting spindlc, having at its upper e (1 means for attachment to it pipe insulat ngbushings mounted on the spindle and cnrry-- ing two sets of contacts for 8 number of lamps, and an inolosing casing.

18. A clustcr-ib-Lture, comprising a central supporting-spinclle, insulating-bushings mounted on the spindle, two rings carrying two sets of contacts for number of lamps, and a nut to hold these bushings and rings assembled on the spindle.

In testimony whereof I aflix lily-signature in presence of two Witnesses HAlt'l/ EY HUBBELL. li itnesses:

A. M. Noosrnn, S. W. Arnnnron. 

